CVE-2023-34453
Due to unchecked multiplications, an integer overflow may occur in versions prior to 1.1.10.1, causing a fatal error.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.71%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
snappy-java is a fast compressor/decompressor for Java. Due to unchecked multiplications, an integer overflow may occur in versions prior to 1.1.10.1, causing a fatal error. The function `shuffle(int[] input)` in the file `BitShuffle.java` receives an array of integers and applies a bit shuffle on it. It does so by multiplying the length by 4 and passing it to the natively compiled shuffle function. Since the length is not tested, the multiplication by four can cause an integer overflow and become a smaller value than the true size, or even zero or negative. In the case of a negative value, a `java.lang.NegativeArraySizeException` exception will raise, which can crash the program. In a case of a value that is zero or too small, the code that afterwards references the shuffled array will assume a bigger size of the array, which might cause exceptions such as `java.lang.ArrayIndexOutOfBoundsException`. The same issue exists also when using the `shuffle` functions that receive a double, float, long and short, each using a different multiplier that may cause the same issue. Version 1.1.10.1 contains a patch for this vulnerability.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.71% probability · 76th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-190
- Affected
- xerial/snappy-java
- Source
- security-advisories@github.com
References
- https://github.com/xerial/snappy-java/blob/05c39b2ca9b5b7b39611529cc302d3d796329611/src/main/java/org/xerial/snappy/BitShuffle.java#L107Issue Tracking
- https://github.com/xerial/snappy-java/blob/master/src/main/java/org/xerial/snappy/BitShuffle.javaIssue Tracking
- https://github.com/xerial/snappy-java/commit/820e2e074c58748b41dbd547f4edba9e108ad905Patch
- https://github.com/xerial/snappy-java/security/advisories/GHSA-pqr6-cmr2-h8hfExploit, Vendor Advisory
- https://github.com/xerial/snappy-java/blob/05c39b2ca9b5b7b39611529cc302d3d796329611/src/main/java/org/xerial/snappy/BitShuffle.java#L107Issue Tracking
- https://github.com/xerial/snappy-java/blob/master/src/main/java/org/xerial/snappy/BitShuffle.javaIssue Tracking
- https://github.com/xerial/snappy-java/commit/820e2e074c58748b41dbd547f4edba9e108ad905Patch
- https://github.com/xerial/snappy-java/security/advisories/GHSA-pqr6-cmr2-h8hfExploit, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.